Question about 1999 GMC Suburban

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My suburban have engine light on,got diagnoze to change camshaft sensor and crantshalt sensor but the light was still,there,wat else you think is the problem of my suv?

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The check engine lite will not go out immediately unless you reset the computer. You must drive the vehicle about 100 miles to clear the ecm. There is probably nothing wrong with your vehicle now. If you use a scanner it will let you know if there are any more code left not a code reader.Good Luck!!!

Posted on Nov 15, 2010

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Posted on Jan 02, 2017

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1 Answer

Whats code po 343


Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/Loss of Power
- Engine Stall
P0343 Chevrolet Description
The Camshaft Position (CMP) Sensor sensor works in conjunction with a 1X reluctor wheel on the camshaft. The Powertrain Control Module (PCM) provides a 12 volt power supply to the CMP sensor as well as a ground and a signal circuit.
The CMP sensor determines whether a cylinder is on a firing stroke or on an exhaust stroke. As the camshaft rotates, the reluctor wheel interrupts a magnetic field produced by a magnet within the sensor. The sensors internal circuitry detects this and produces a signal which the PCM reads. The PCM uses this 1X signal in combination with the Crankshaft Position sensor 24X signal in order to determine crankshaft position and stroke. This diagnostic for the Camshaft Position sensor tests for a loss of Camshaft Position sensor signal.
Observe that as long as the Crankshaft Position sensor 24X signal is available, the engine will start. The PCM can determine top dead center for all cylinders by using the Crankshaft Position sensor 24X signal alone. The Camshaft Position sensor 1X signal is used by the PCM to determine if the cylinder at top dead center is on the firing stroke, or the exhaust stroke. The system attempts synchronization and looks for an increase in engine speed indicating the engine started. If the PCM does not detect an increase in engine speed, the PCM incorrectly synchronized to the exhaust stroke and will re-sync to the opposite cam position. A slightly longer cranking time may be a symptom of this condition.

Read more: http://engine-codes.com/p0343_chevrolet.html#ixzz31FPYjyRM

Mar 26, 2014 | 2002 Chevrolet Suburban

2 Answers

99 GMC suburban 5.7l P1345 wont start/misfire


The primary intent of this code is to detect slipped camshaft timing. Have you checked the camshaft timing? Your symptoms indicate you are a tooth off.

May 24, 2017 | 1999 GMC Suburban

1 Answer

How to set timming


The ignition timing cannot be changed on this vehicle because it is controlled by the ECM. However, by turning the distributor you are changing the camshaft ****** offset. This will cause a check engine light to come on with a code for crankshaft/camshaft correlation stored in your ECM. To get light back off you must use scan tool and set the camshaft ****** offset back to 0* +/-2*.

May 20, 2012 | 1999 Chevrolet Suburban

1 Answer

My car is showing PO344 (Camshaft Position Sensor A Circuit Intermittent) as a problem it's having... I replaced the camshaft sensor about 2 years ago when I was having a similar problem; could the sensor...


All ways, the camshaft position sensor signal sent to the ECM is intermittent

The Camshaft Position Sensor is an electronic device used in an engine to record the rate at which the camshaft is spinning. This information is used by the Powertrain Control Module (PCM) or Electronic Control Module(ECM) to control ignition and fuel injection. The camshaft position sensor senses the retraction of camshaft (intake) to identify a particular cylinder. The camshaft position sensor senses the piston position. The sensor system consists of a rotating part, typically a disc, as well as a static part, the actual sensor.

When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. The change in the magnetic field cause the voltage from the sensor to change.

When the crankshaft position sensor (POS) system becomes inoperative, the camshaft position sensor provides various controls of engine parts instead, utilizing timing of cylinder identification signals.

Check thos DTC diagnostic and possible solutions about P0344 - Camshaft Position Sensor Circuit Intermittent

Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/Loss of Power
- Engine Stall

Possible causes
- Harness or connectors (The sensor circuit is open or shorted)
- Camshaft position sensor may be faulty
- Camshaft (Intake) may be damage
- Starter motor may be faulty
- Starting system circuit
- Dead (Weak) battery

Possible solution
- Charge battery
- Repair harness or connector
- Replaced Camshaft Position Sensor.
Tech notes
- Sometimes and in some models, low battery voltage or a weak starter can can trigger a Camshaft Position Sensor code.


Hope this helps.

Mar 27, 2011 | Dodge Stratus Cars & Trucks

2 Answers

1998 intrepid , ill be driving and all the sudde ill fell a little flutter in the motor , engine light comes on and car stalls out wait about half an hour and it starts up and runs fine . ive been told...


Hi!!
This type of vehicles do have the problems you mentioned, CPS, CKP, IAC solenoid, together with the coolant leak on top of engine and the crack of the coolant reservoir tank. I am telling you this as an Intrepid owner.
Check fuel pump pressure, if don't have a gauge, borrow one from AutoZone or similar AutoParts. Also check it when engine don't start. If OK, check for spark, could be camshaft sensor (CPS).
Good Luck!! Rate this post!!

Aug 14, 2010 | 1998 Dodge Intrepid

1 Answer

1995 k2500 suburban idle too fast


replace the coolant temp sensor,it`s values are off,it is defective.Also if this does not work,witch I think It will,change the throttle position sensor.

Nov 15, 2009 | 1995 GMC Suburban

2 Answers

99 suburban 5.7 1500 location of camshaft sensor


It's in the distributor. There is 2 connectors on the outside of the distributor to it. Make sure they are both connected before replacing parts. The gear on the distributor wears out too.

Sep 12, 2009 | 1999 Chevrolet Suburban

2 Answers

2003 chevy suburban keeps dying


fuel filter. it sounds like it is clogged.

Jan 08, 2009 | 2003 Chevrolet Suburban 1500

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